Dietary patterns and suicide in Japanese adults: The Japan Public Health Center-based Prospective Study

Although dietary patterns have been linked to depression, a frequently observed precondition for suicide, no study has yet examined the association between dietary patterns and suicide risk. To prospectively investigate the association between dietary patterns and death from suicide. Participants we...

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Bibliographic Details
Published in:British journal of psychiatry 2013-12, Vol.203 (6), p.422-427
Main Authors: Nanri, Akiko, Mizoue, Tetsuya, Poudel-Tandukar, Kalpana, Noda, Mitsuhiko, Kato, Masayuki, Kurotani, Kayo, Goto, Atsushi, Oba, Shino, Inoue, Manami, Tsugane, Shoichiro
Format: Article
Language:English
Subjects:
Adult
Aged
Alcohol
Death & dying
Diet
Diet - ethnology
Diet - statistics & numerical data
Epidemiology
Family medical history
Fatty acids
Female
Fish
Food
Food - statistics & numerical data
Food consumption
Health facilities
Healthy food
Humans
Japan
Japan - epidemiology
Male
Mental depression
Middle Aged
Nutrition research
Nutrition Surveys
Population
Potatoes
Principal Component Analysis
Principal components analysis
Prospective Studies
Psychiatry
Public Health
Questionnaires
Risk Factors
Seaweeds
Sex Distribution
Solanum tuberosum
Soya beans
Suicide
Suicide - statistics & numerical data
Suicide - trends
Suicides & suicide attempts
Vegetables
Vitamin B
Womens health
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Summary:Although dietary patterns have been linked to depression, a frequently observed precondition for suicide, no study has yet examined the association between dietary patterns and suicide risk. To prospectively investigate the association between dietary patterns and death from suicide. Participants were 40 752 men and 48 285 women who took part in the second survey of the Japan Public Health Center-based Prospective Study (1995-1998). Dietary patterns were derived from principal component analysis of the consumption of 134 food and beverage items ascertained by a food frequency questionnaire. Hazard ratios of suicide from the fourth year of follow-up to December 2005 were calculated. Among both men and women, a 'prudent' dietary pattern characterised by a high intake of vegetables, fruits, potatoes, soy products, mushrooms, seaweed and fish was associated with a decreased risk of suicide. The multivariable-adjusted hazard ratio of suicide for the highest v. lowest quartiles of the dietary pattern score was 0.46 (95% CI 0.28-0.75) (P for trend, 0.005). Other dietary patterns (Westernised and traditional Japanese) were not associated with suicide risk. Our findings suggest that a prudent dietary pattern may be associated with a decreased risk of death from suicide.
ISSN:0007-1250
1472-1465
DOI:10.1192/bjp.bp.112.114793